Magnetic detection of air gaps formed at breaks in conveyor belt

Details Magnetic detection of air gaps formed at breaks in conveyor belt Magnetic detection of air gaps formed at breaks in conveyor belt

1985-08-01

1989-09-05

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Plural tests

324232, 324240, G01N 2772, G01N 2782, G01R 3312

Patent

active

048642339

ABSTRACT:
There is disclosed herein a method and apparatus wherein conveyor belt cords are first de-gaussed to remove any stray magnetic fields, and then longitudinal unidirectionally magnetized. The belt is then magnetically scanned and the electrical output signal is passed through a low pass filter in order to produce a break signal indicative of breaks in the magnetically permeable cords of the conveyor belt.

REFERENCES:
patent: 2677802 (1954-05-01), Irwin
patent: 3271664 (1966-09-01), Mountz et al.
patent: 4439731 (1984-03-01), Harrison

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